Sign in with
Sign up | Sign in
Your question

SSDs Raid 1, HDDs Raid 10?

Tags:
  • NAS / RAID
  • Servers
  • Business Computing
  • SSD
Last response: in Business Computing
Share
August 29, 2014 2:49:35 PM

We are a 3 doctor office doing medical and billing records on a 5 year old adequate server, and planning on getting a new server. Presently have Raid 10 on 4 300GB 15k SAS LFF drives with Raid 10 on 4 2TB 5k SAS LFF drives for archival and backup. Have external backup as well.
I am considering switching to SFF with SSDs and HDDs for new server.
What is your opinion on Raid 1 with 2 Intel S3700 800GB SSD drives and Raid 10 on 6 1TB HDDs?

More about : ssds raid hdds raid

August 29, 2014 4:09:47 PM

raid 10 on 6 drives is a bit uncommon, will you have a stripe across 3 pairs of mirrored disks, andbe losing 1tb of space overall. The six drives will net you 3tb of space and you currently have 4tb with the current system.

Is there room for a hotspare in your system?
What about ssd caching (if the data on the harddrives might be read frequently) ?
m
0
l
August 29, 2014 4:44:48 PM

Thanks popatim,
6 drives only to get more space since sff hdds don't have the capacity of the LFF hdds, and enterprise sff hdds are around 1TB max. I don't need a hot spare of the hdds. I have a lot of empty space now on that raid, and thought I would get a secondary sff cage later if needed for space.
Your question makes me think of getting a tower with 6 LFF bays and using an adapter to put the ssds into the lff slots. That would allow me to use 4 TB lff hdds in Raid 10.
Also, I don't have any IT experience, but expect that a staff of 19 working with 3 databases is probably a lot more reading than writing to the disks, so I don't know if the extra money for Intel S3700 is worth it in peace of mind compared with S3500 for our level of work.
m
0
l
August 29, 2014 5:09:26 PM

About ssd caching...
Do you mean like a hybrid? I was planning on a 1-2GB write back cache, but open to any suggestions.
m
0
l
!